> Fresh air is created by plants and CO2 is taken from the air by plants Plants can be net CO2 consumers, but they burn O2 to CO2 just like you. Tropical fore

> Fresh air is created by plants and CO2 is taken from the air by plants Plants can be net CO2 consumers, but they burn O2 to CO2 just like you. Tropical forests are net CO2 producers for most of the day, except for a few hours around noon, but that's enough to become net consumers averaged over the day. Occasionally someone fills their room with plants, and then puzzles over having high CO2 levels.